Electrocatalysis by Surface-Confined Species

Rotating disk voltammetry is widely used for studying catalytic processes. For a reversible -electron transfer process controlled by mass transport in solution, the limiting current, Ziim (pA), recorded in a linear potential scan voltammogram varies with the rotation rate, co (sec ), following the Levich equation (Bard and Faulkner, 2001)  

Following Andrieux et al. (1982), for a mediated catalytic process, the limiting current should satisfy  

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